صحيح مسلم 4167

Ibn 'Umar reported that 'Umar b. al-Khattib (Allah be pleased with him) donated a horse in the path of Allah and (later on) he found it being sold, and he decided to buy that. He asked the Messenger of Allah (ﷺ) about it. whereupon he (the Holy prophet) said:Don't buy that and do not get back what you gave in charity

Rapporté par Ibn 'Umar : Omar b. al-Khattab رضي الله عنه a donné un cheval dans le sentier d’Allah, puis il l’a retrouvé en vente et a voulu l’acheter. Il a demandé au Messager d’Allah ﷺ, qui lui a dit : « Ne l’achète pas et ne reprends pas ce que tu as donné en aumône. »